This 7098 bezel mount adaptor is a plastic mounting case for use with the Blue Sea Systems 285 Series panel mounted circuit breakers. It allows the breaker to be mounted in a 54mm diameter panel hole which is often easier than cutting a rectangular hole (required when fitting the breaker on its own).
This adaptor is also useful in applications where space behind the panel is limited because the adaptor brings the circuit breaker forward from the mounting surface by approximately 20mm. It provides a professional-looking finish to your installation and neatly covers the edges of the panel cut-out hole.